Evaluation of the accuracy of dose delivery for IMRT based on transit dosimetry

Tae Seong Baek; Eun Ji Chung; Eui Kwan Koh; Jungju Seo; Myonggeun Yoon

doi:10.1097/HP.0000000000000098

Evaluation of the accuracy of dose delivery for IMRT based on transit dosimetry

Tae Seong Baek, Eun Ji Chung, Eui Kwan Koh, Jungju Seo, Myonggeun Yoon

School of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The authors have developed and evaluated a new method that uses transit dose in the treatment room in verification of dose delivery to patients. Five intensity modulated radiotherapy (IMRT) plans were selected from actual cancer patients, and transit dose was measured using MapCHECK 2 and an anthropomorphic phantom. The criteria used as a verification tool for the dose delivery to the patient were gamma-index-based dose comparison between the computed dose and measured dose. When the doses were delivered to an anthropomorphic phantom normally, the average passing rate was 95.2% based on a gamma index analysis. This feasibility study suggested that transit dose-based quality assurance can provide information about the accuracy of an inhomogeneity correction algorithm and patient positioning during treatment, allowing its use as a verification tool for actual dose delivery to patients in the treatment room.

Original language	English
Pages (from-to)	200-205
Number of pages	6
Journal	Health Physics
Volume	107
Issue number	3
DOIs	https://doi.org/10.1097/HP.0000000000000098
Publication status	Published - 2014 Sept

Keywords

exposure
medical
physics
quality assurance
radiation

ASJC Scopus subject areas

Epidemiology
Radiology Nuclear Medicine and imaging
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1097/HP.0000000000000098

Cite this

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abstract = "The authors have developed and evaluated a new method that uses transit dose in the treatment room in verification of dose delivery to patients. Five intensity modulated radiotherapy (IMRT) plans were selected from actual cancer patients, and transit dose was measured using MapCHECK 2 and an anthropomorphic phantom. The criteria used as a verification tool for the dose delivery to the patient were gamma-index-based dose comparison between the computed dose and measured dose. When the doses were delivered to an anthropomorphic phantom normally, the average passing rate was 95.2% based on a gamma index analysis. This feasibility study suggested that transit dose-based quality assurance can provide information about the accuracy of an inhomogeneity correction algorithm and patient positioning during treatment, allowing its use as a verification tool for actual dose delivery to patients in the treatment room.",

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AU - Baek, Tae Seong

AU - Chung, Eun Ji

AU - Koh, Eui Kwan

AU - Seo, Jungju

AU - Yoon, Myonggeun

PY - 2014/9

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AB - The authors have developed and evaluated a new method that uses transit dose in the treatment room in verification of dose delivery to patients. Five intensity modulated radiotherapy (IMRT) plans were selected from actual cancer patients, and transit dose was measured using MapCHECK 2 and an anthropomorphic phantom. The criteria used as a verification tool for the dose delivery to the patient were gamma-index-based dose comparison between the computed dose and measured dose. When the doses were delivered to an anthropomorphic phantom normally, the average passing rate was 95.2% based on a gamma index analysis. This feasibility study suggested that transit dose-based quality assurance can provide information about the accuracy of an inhomogeneity correction algorithm and patient positioning during treatment, allowing its use as a verification tool for actual dose delivery to patients in the treatment room.

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Evaluation of the accuracy of dose delivery for IMRT based on transit dosimetry

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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